The SPYPOINT FLEX-S delivers the same performance and flexibility of the original FLEX with the added benefit of an integrated solar panel charging an internal lithium battery to keep your camera working longer than you ever imagined. Scout confidently knowing the sun shining on your FLEX-S is keeping the battery charged and the camera taking pictures. - The FLEX-S is equipped with an onboard lithium battery constantly being charged by the integrated solar panel on the top of the camera. Want to be sure your camera will keep working? The internal battery can be used alongside the eight-AA battery tray or the LIT-22 lithium battery installed as well extending battery life even further. A cellular camera you don't even have to visit frequently to manage batteries? Every hunter